Stephen Stills is the lead singer, guitarist, and "talent" of Sex Bob-omb. He is 22 (23 in Volume 4 onward) years old and went to university with Scott Pilgrim at the University of Toronto, where he played in the band Kid Chameleon with Scott, Envy Adams, and others. He is currently employed at The Happy Avocado vegetarian restaurant as a cook and later helps Scott get a job there as a dish-washer. Stephen was in a tumultuous relationship with Julie Powers, who at one point suspects that he and Knives Chau may have a mutual attraction to one another, though he breaks up with Julie in Scott Pilgrim vs. the Universe and had been dating Joseph for a while by Scott Pilgrim's Finest Hour. Whilst typically laconic, Stephen is known for rare fits of neurosis, (typically over the quality of his band's music compared to others), as well as irritability (usually over Scott's absentmindedness). He is named after the musician Stephen Stills of the group Crosby, Stills, Nash & Young. For reasons unknown, Scott always refers to him by his full name.
In Sex Bob-omb, Stephen is referred to as "the talent" of the group by most everyone and acts as the group's lead vocalist and guitarist. In Volume 4 however, things change as while helping Kim Pine move into her new apartment with Hollie Hawkes and Joseph, and we learn Joseph has a vast array of recording equipment. Stephen is amazed by this and instantly asks Joseph to help them record an album which he agrees to, only because he finds Stephen attractive. The group eventually does record an album which spans several months of work, both Volumes 4 & 5, though the end product is only 17 minutes long.
